refactor: replace json.loads() with json.load() (#26)

The `json` module provides two ways to read JSON data: a `.loads()` method that accepts a JSON string, and a `.load()` method, that works on files directly. So instead of reading a file manually and passing it to `json.loads()`, it is

Co-authored-by: deepsource-autofix[bot] <62050782+deepsource-autofix[bot]@users.noreply.github.com>

src/plugins/nonebot_plugin_addFriend/__init__.py

@@ -104,7 +104,7 @@ async def _(bot: Bot, event: MessageEvent, args: Message = CommandArg()):
     global config
     # 下个版本把其他俩json也重载一下，不知道为啥这次就不想改
     with open(configPath, 'r', encoding='utf-8') as fp:
-        config = json.loads(fp.read())
+        config = json.load(fp)
     check_dict_key_bot_id(config, requestorDict, numDict, bot)
     text = event.get_plaintext().strip()
     argsText = args.extract_plain_text().strip()

src/plugins/nonebot_plugin_addFriend/configUtil.py

@@ -39,7 +39,7 @@ def readData(path, content=None, update=0) -> dict:
         with open(path, "w", encoding="utf-8") as fp:
             json.dump(content, fp, ensure_ascii=False)
     with open(path, "r", encoding="utf-8") as fp:
-        data = json.loads(fp.read())
+        data = json.load(fp)
     return data